# Questions tagged [error]

Questions seeking help understanding error messages and fixing errors.

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### CreateCOMObject doesn't work on home edition

I can call an application named "PinPoint.Plate" with Visual Basic, Python and Mathematica version 8 but not with version 9. I can still call Excel though. How can I fix this? This is what I did: <...
1k views

### Evaluating FindRoot at different starting points on a grid

I'm trying to evaluate the roots of a complex function at different starting points on a grid using Do[Do[FindRoot[g[z], {z, j + k*I}], {j, 10}], {k, 10}]. However, ...
1k views

### How to show error messages in current notebook?

I would like Mathematica to print error messages in current notebook together with output. This is default option in Mathematica, but recently I turned it off somehow. Now, I am getting output in ...
170 views

### Differences between ParametricPlot3D and NIntegrate

I have a function $f : \mathbb{R} \rightarrow \mathbb{R}^3$ defined in a rather nasty way in mathematica however it's a smooth function and what not. I am interested in $f'[t]$ and when I run it ...
1k views

### Quiet doesn't work with FindRoot when using Brent method

Bug introduced in 9.0.1 or earlier and persisting through 12.0 or later The following has no solution: FindRoot[x == 1, {x, 0.25, 0, 0.5}] And Mathematica ...
938 views

### How can I get WhenEvent to recognize criterion I specify?

Using NDSolve I want to solve a differential equation till a quantity which is a function of the dependent variables reaches a certain value. My functions and criteria are complicated, but I am able ...
1k views

### Solving set of non-linear simultaneous equations gives PolynomialGCD::lgrexp error - what next?

I'm trying to solve a set of six simultaneous non-linear equations to get a numerical answer using NSolve: ...
564 views

### Differential Equations with Matrices

I'm trying to implement the differential equation of a Cellular Neural Network in Mathematica as seen below: ...
80 views

### Consistently annoying error messages in Mathematica 9 [duplicate]

Possible Duplicate: Strange ::usage behavior in v9 Has anyone had any issues with a function, let's call it Function, which worked in Mathematica 8 getting the error message StringMatchQ::strse: ...
1k views

### How can I deal with an NDSolve::ivone message regarding boundary values?

I have a question regarding the error message: ...
347 views

### Font Issues: “Like Resource 58” error

I'm running Mathematica 9.0.0 on a Macbook Air with OSX 10.6.8 and I've recently started having issues with the font in the program. All special characters are being replaced with other characters in ...
122 views

### StringMatchQ error messages printed to console while main notebook is sitting idle [duplicate]

Possible Duplicate: Strange ::usage behavior in v9 I'm currently finishing up a Mathematica vector calculus package (MMA9.0 on Mac Os X), but have had a persistent problem that I haven't been ...
3k views

### Using a compiled function inside NIntegrate gives “CompiledFunction::cfsa” message

The following function is defined for Real input: ...
249 views

### Manipulate code creates error messages when file is opened

When I open the file containing the following code I get a series of error messages. Once I evaluate the cell with the code the error messages disappear. What is Mathematica doing when it opens a ...
14k views

### How do I troubleshoot when I get a Part::partd or a Part::partw error?

Mathematica has produced the following error message: Part::partd: Part specification ... is longer than depth of object? What is partd? I think I may have ...
379 views

### StringMatchQ and Alternatives throws message in init.m

Bug fixed in 11.2.0 The report of this issue, which itself relates to code of my answer here, exposed a behavior I cannot explain. If I use StringMatchQ in ...
543 views

### How can I remove unnecessary warning messages?

I updated Mathematica,CdfPlayer to new Version (9). I made a simple Application in Mathematica 9 and deployed into ...
1k views

### Solving/Reducing equations in $\mathbb{Z}/p\mathbb{Z}$

I was trying to find all the numbers $n$ for which $2^n=n\mod 10^k$ using Mathematica. My first try: Reduce[2^n == n, n, Modulus -> 100] However, I receive ...
266 views

### What's wrong with this code to create a matrix?

Here is my code: ...
4k views

### What is an “INTERNAL SELF-TEST ERROR”?

I got this all the time after updating to 9.0 (OS 10.8.2): That's Clipboard|c|3015 for the benefit of anyone searching. The error went away with 9.0.1, but a version has reappeared (multiple times ...
255 views

### Error changing edge thickness in a GraphPlot

I'm having some problems with the Mathematica graphics inspector. I want to make a graph with the following code: ...
526 views

### How to find a specific error message?

Is there a way to find an existing error message in the System context, that is used for a certain case? I want to include a message in a custom function that ...
217 views

### Dealing with errors and resuming the code after one

How can I write my Mathematica code so that it resumes at a specific place if any Message is displayed during the execution of an expression? For example, in Visual ...
2k views

### NIntegrate error bound

I am trying to evaluate a highly oscillatory integral using NIntegrate. I fear that due to limited resources (time and/or memory), I will not be able to evaluate the integral to the desired precision. ...
2k views

### No warning when extrapolating with Plot

One of the most annoying "features" of Mathematica is that the Plot family does extrapolation on InterpolatingFunctions without ...
1k views

### Problem with NDsolve for a system of equations

I want to solve a system of differential equations which is not very complicated, but I cannot handle the problem with mathematica!! Please have a look at the problem and result and help me with your ...
2k views

### How to find local minima of a multivariate function with singularity?

I am working on a logistic regression problem which requires minimizing a cost function J[{theta0, theta1, theta2}, X, y] to find the optimal value for fitting ...
30k views

### How do I identify the source of a “Tag times protected” error?

I have some code that looks like Table[ a = 1; b = {2, 3} c = i;, {i, 2} ] which gives an error: Set::write: Tag Times in c {2,3} is Protected....
6k views

### Stategies to avoid NIntegrate::slwcon error

I am trying to numerically evaluate an integral whose integrand depends on two parameters, say $(a,b)$ and when $b\gg 1$ I suspect (although it's not guaranteed) that the integrand is very small. Thus ...
315 views

### Fighting Less::nord at the root: Any unintended consequences?

After being plagued too much by Less::nord and companions, I've decided to try to fight it at the root: The comparison operators. I noticed that typically, the bad ...
619 views

### Skip one step of the loop if there is an NIntegrate::eincr message

Is there a possibility of skipping one step of a loop if in this step there appears an error like NIntegrate::eincr? After skipping, the loop should go to the next ...
6k views

### NonlinearModelFit::cvmit: Failed to converge to the requested accuracy or precision within 100 iterations

I have got a problem in my program with NonlinearModelFit: ...
324 views

### Printing a success message if no errors have yet been thrown in the current session

I plan to run a lengthy Mathematica script on a Linux terminal (by "a Linux terminal," I mean that I have text output only -- no GUI), using the program math. To ...
1k views

### FindRoot Infinite expression 1/0 encountered error

I have 1 equation in 1 variable, which when I use Plot, looks like this: ...
547 views

### ComplexInfinity/Indeterminate error when evaluating derivative

Motivation: I want to find the coefficients for the polynomial that is obtained when one adds together the first $n$ natural numbers to the power of $a$; that is, when you consider \$1^{a} + 2^{a} + \...
833 views

### Getting Internal Self-Test Error

I have two questions related to this simple code: ...
718 views

### How can SquareWave be used as the input in OutputResponse`?

I'd like to compute the response of a TransferFunctionModel when driven by a SquareWave. Here's a simple example, ...
1k views

### Take screenshot of the entire desktop using Mathematica

Is it possible to get a screenshot of the entire desktop directly in Mathematica? I am on Ubuntu running Mathematica 8. For some reason GUIScreenShot[] fails. But ...
868 views

### How to set the initial condition? (to make IC and BC consistent)

I want to find the initial condition which fits mixed boundary condition of Phi[r, Theta, t]. The original initial condition in text is Phi[r, Theta, 0] == 1 . ...
10k views

### How do I prevent NIntegrate::inumr errors within other functions?

I believe this question is best illustrated with a simple example. If I run FunctionInterpolation[NIntegrate[a + b, {a, 0, 1}], {b, 0, 1}] I get errors of the ...
3k views

### FeynArts not working properly

So I have installed all FeynArts folders (from 3.5 to 3.7) with FeynCalc 8.0.1., and none of it is working properly :\ First I load the path to specific FeynArts package (3.5 for instance), then, by: ...
2k views

### Using Position (which requires a pattern) in the same manner as Select (which requires a criterion)

I am using Mathematica7. I have a list of lists (creatively named list in the following sample code) containing data. I would like to find the positions of the ...
543 views

### Mathematica Opens Each Session With Beep

First off, I am using Mathematica 8.0 and Mac OS X 10.7.4. Recently, when starting a new Mathematica session, I am confronted with an error beep and message window stating "The file you tried to open ...
541 views

### Error Interpretation in NIntegrate

I am using a recursion algorithm developed by Migdal for Lattice Field Theory, and I have the following code: ...
30k views

### What does “Tag Integer is Protected” message mean?

(Newbie question) For every function I define I get this message: When I close and reopen Mathematica, and re-enter the function definition, I don't get the message anymore. What does it mean?
122 views

### Strange Tilt on error notification

I was testing the source code of the answers to this question. And when I tried this response and maxed out most of the manipulators, this is what I got. What went wrong that the errors are tilted. ...
779 views

### Inconsistent initial and boundary conditions

I have a 4th order nonlinear PDE with the following BCs and IC: ...
156 views

### Strange setting in FormatValues[MakeExpression]

My system is: 8.0 for Mac OS X x86 (64-bit) (October 5, 2011) When I start Mathematica and call FormatValues[MakeExpression] I get the following output: ...